TensorFlow Bug Fixed: Type Mismatch in Lookup Tables Caused Full Process Crash

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A bug in TensorFlow's lookup table export operation caused the entire Python process to crash with a SIGABRT signal when mismatched data types were passed to LookupTableExportV2. Unlike other lookup table kernels, LookupTableExportOp skipped signature verification and directly called ExportValues, triggering a hard C++ CHECK_EQ assertion failure instead of a catchable Python exception. The issue, tracked as GitHub issue #125503 in the tensorflow/tensorflow repository, was identified while reviewing open bugs in the project. The fix aligned LookupTableExportOp with the pattern used by other lookup table kernels by adding proper signature matching before export. This ensures type mismatches now raise a recoverable InvalidArgumentError rather than aborting the interpreter.

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